215505235133 has 4 divisors (see below), whose sum is σ = 215506450080. Its totient is φ = 215504020188.

The previous prime is 215505235111. The next prime is 215505235207. The reversal of 215505235133 is 331532505512.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 215505235133 - 2¹⁴ = 215505218749 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 215505235093 and 215505235102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215505235103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 283985 + ... + 715302.

It is an arithmetic number, because the mean of its divisors is an integer number (53876612520).

Almost surely, 2^215505235133 is an apocalyptic number.

It is an amenable number.

215505235133 is a deficient number, since it is larger than the sum of its proper divisors (1214947).

215505235133 is an equidigital number, since it uses as much as digits as its factorization.

215505235133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1214946.

The product of its (nonzero) digits is 67500, while the sum is 35.

The spelling of 215505235133 in words is "two hundred fifteen billion, five hundred five million, two hundred thirty-five thousand, one hundred thirty-three".